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Use of the Composite Properties of a Microwave Resonator to Enhance the Sensitivity of a Honey Moisture Sensor

1
Telecommunication and Photonics Group, Electronics Department, Engineering Division of the Salamanca-Irapuato Campus, University of Guanajuato, Salamanca, Guanajuato 36885, Mexico
2
Mechatronics Department, Technological University of Salamanca, Salamanca, Guanajuato 36766, Mexico
*
Author to whom correspondence should be addressed.
Academic Editors: Paul M. Meaney and Robin Augustine
Sensors 2021, 21(7), 2549; https://doi.org/10.3390/s21072549
Received: 8 February 2021 / Revised: 12 March 2021 / Accepted: 1 April 2021 / Published: 6 April 2021
(This article belongs to the Special Issue Biomedical Microwave Sensors for Point-of-Care Applications)
A moisture sensor based on a composite resonator is used to measure different honey samples, which include imitation honey. The sensor changes its frequency response in accordance with the dielectric permittivity that it detects in the measured samples. Although reflectometry sensors have been used to measure the percentage of moisture in honey for almost a century, counterfeiters have achieved that their apocryphal product is capable of deceiving these kinds of sensors. Metamaterial features of the composite resonators are expected to improve their response when detecting lossy samples such as organic samples. It is also sought that these sensors manage to detect small differences not only in the real parts of the dielectric permitivities of samples but also in their imaginary parts, and, thus, the sensors are able to discern between real honey and slightly altered honey. Effectively, not only was it possible to improve the response of the sensors by using lossy samples but it was also possible to identify counterfeit honey. View Full-Text
Keywords: microwave sensor; reflectivity; permittivity; sensor applications microwave sensor; reflectivity; permittivity; sensor applications
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MDPI and ACS Style

Reyes-Ayona, J.R.; Gallegos-Arellano, E.; Sierra-Hernández, J.M. Use of the Composite Properties of a Microwave Resonator to Enhance the Sensitivity of a Honey Moisture Sensor. Sensors 2021, 21, 2549. https://doi.org/10.3390/s21072549

AMA Style

Reyes-Ayona JR, Gallegos-Arellano E, Sierra-Hernández JM. Use of the Composite Properties of a Microwave Resonator to Enhance the Sensitivity of a Honey Moisture Sensor. Sensors. 2021; 21(7):2549. https://doi.org/10.3390/s21072549

Chicago/Turabian Style

Reyes-Ayona, José R., Eloisa Gallegos-Arellano, and Juan M. Sierra-Hernández. 2021. "Use of the Composite Properties of a Microwave Resonator to Enhance the Sensitivity of a Honey Moisture Sensor" Sensors 21, no. 7: 2549. https://doi.org/10.3390/s21072549

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